 # Second Law of Thermodynamics

The Second law of thermodynamics states that the state of entropy of the universe, as an isolated system, will always increase over time. The second law also states that the changes in the entropy in the universe can never be negative. Why is it that when you leave an ice cube at room temperature, it Read more about Second Law of Thermodynamics[…] # Common Tangents

Direct Common Tangents: The direct common tangents to two circles meet on the line of centers and divide it externally in the ratio of the radii. The transverse common tangents also meet on the line of centers and divide it internally in the ratio of the radii Now we discuss the number of common tangents that exist for the cases Read more about Common Tangents[…] # First Law of Thermodynamics

We have learnt about heat, internal energy and work. We also know how these are related to states of the system. But before going any further we need to define thermodynamics. It is a process that brings about change in the state of a system. Now which quantities determine state of system? These are pressure, Read more about First Law of Thermodynamics[…] # VITEEE 2018 Application Starts from 9th November, 2017

VITEEE 2018 Application Starts from 9th November, 2017 What is VITEEE? The most highly sought after B.Tech degrees from VIT University are achieved by successfully getting through the VITEEE examination conducted every year. The students based on their merit are given a range of options to pursue their under graduation degree. The university currently offers Read more about VITEEE 2018 Application Starts from 9th November, 2017[…] # Reversible and Irreversible Process

We see so many changes happening around us every day, boiling of water, rusting of Iron, melting Ice, burning of paper etc. In all these processes we observe that the system in consideration goes from an initial state to a final state where some amount of heat is absorbed from the surrounding and some amount Read more about Reversible and Irreversible Process[…] # Conjugate of A Complex Numbers

Complex Numbers: The numbers of the form x +iy are known an complex numbers .here x and y real numbers and i = √-1 is iota.A complex number may also defines as an ordered pair of real numbers and it is denoted by symbol (x, y). Where x is called real part and y is Read more about Conjugate of A Complex Numbers[…] # Average Velocity and Average Speed

Before learning about average speed and average velocity, we must know the difference between distance and displacement. Distance is a scalar quantity which generally implies how much ground has been covered by the object. Displacement is a Vector quantity, and it is the shortest possible distance between the start and end point. Ex: If a Read more about Average Velocity and Average Speed[…] # Tangent and Normal

Tangent to the circle: Circle is a line that touches the circle at exactly one point is called tangent to the circle (or) A tangent to a curve at a point is a straight line that touches the curve at that point.Equation of tangent: The equation of the tangent at p(x₁, y₁) of the circle S = 0 Read more about Tangent and Normal[…] # Instantaneous Velocity and Speed

Instantaneous velocity: It is defined as the rate of change of position for a time interval which is very small almost zero. Beside Instantaneous velocity, average velocity is a way of defining how fast a body is moving. But average velocity is only the average of the velocity of body over a given time interval, Read more about Instantaneous Velocity and Speed[…]